Australian Energy Market Operator

AEMO operates Australia's National Electricity Market (NEM), the interconnected power system in Australia’s eastern and south-eastern seaboard, and the Wholesale Electricity Market (WEM) and power system in Western Australia.

AEMO operates gas retail markets in New South Wales and the Australian Capital Territory, Queensland, South Australia, Victoria, and Western Australia. AEMO also operates wholesale gas markets in south-eastern Australia, those being the Declared Wholesale Gas Market in Victoria (DWGM), the Short Term Trading Market in Adelaide, Brisbane and Sydney (STTM), and the Gas Supply Hub (GSH), whose trading locations are based at Wallumbilla in Queensland, and Moomba in South Australia. AEMO also operates the Natural Gas Services Bulletin Board (GBB), and is system operator of the Victorian Gas Declared Transmission System. AEMO is also responsible for Gas Services Information functions in Western Australia.

Dispatch advisories

System Management must inform Market Participants and Network Operators of impending or current situations that could have security ramifications for Market Participants and Network Operators. It does this by issuing dispatch advisories in the following situations:

Notification of starting or ending a high risk or emergency operating state.

A dispatch advisory includes a statement of the operating state (Normal, High-Risk, or Emergency) during the period to which the advisory relates. These advisories include information on how Market Participants should respond to the situation. The WEM Rules recognise that sometimes System Management has to react so quickly to a situation that it is not be able to issue a Dispatch Advisory until after the event.

Market Participants are obliged to keep System Management informed of any circumstances they become aware of which might result in System Management issuing a dispatch advisory.

Market advisories

AEMO must inform Market Participants of impending situations that could impact market outcomes. It does this by issuing market advisories in the following situations:

Market system outages, whereby aspects of the market cannot run normally due to systems failures.

Notification of suspension of any aspect of the market.

These advisories include information on how Market Participants should respond to the situation. Note that advisories related to dispatch are called dispatch advisories (see above).

Dispatch and Market Advisories can be downloaded from the Market Data page. The information provided in the Market Data page is published in accordance with Market Rule 10.5.1(k).